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1978.04
Opening of Onsan zinc refinery |
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 Registered
zinc ingot at London Metal
Exchange |
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Completed
expansion of Onsan zinc
refinery to 170,000 tonnes
per annum |
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Incorporated
Korea Nickel Corporation |
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Started
lead refinery with 35,000
tonnes per annum |
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Established
R&D center at Onsan |
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Started
first production of zinc
with 50,000 tonnes per annum |
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Incorporated
Korea Zinc Co., Ltd. |
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